Sadly, that was a lie, and the group was instead taken by train to Auschwitz-Birkenau. Although nobody knows for sure how Mann received the documents necessary for travel, it is thought that she obtained them through Warsaw’s infamous Hotel Polski.
That year, the hotel had become a temporary home for Jews with foreign citizenship documents and those who came to buy such papers, all of whom were waiting to leave Warsaw. They thought they would leave to begin new lives in South America. The scheme, however, was a trap, and the residents ended up in concentration camps.